A charged particle is projected with velocity υ0 along positive x−axis. The magnetic field B is directed along negative z−axis between x=0 and x=L. The particle direction of projection. Find the velocity with which the same particle is projected (at x=0) along positive x− axis so that when it emerges out (at x=L), the angle made by it is 30∘with the direction of projection

A charged particle is projected with velocity υ0 along positive x−a

1.	A charged particle is projected with velocity υ0 along positive x−axis. The magnetic field B is directed along negative z−axis between x=0 and x=L. The particle direction of projection. Find the velocity with which the same particle is projected (at x=0) along positive x− axis so that when it emerges out (at x=L), the angle made by it is 30∘with the direction of projection
Answer» A charged particle is projected with velocity υ₀ along positive $x -$ axis. The magnetic field $B$ is directed along negative $z -$ axis between $x = 0$ and $x = L$ . The particle direction of projection. Find the velocity with which the same particle is projected (at $x = 0$ ) along positive $x -$ axis so that when it emerges out (at $x = L$ ), the angle made by it is $30^{\circ}$ with the direction of projection

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